Bunn FMD-1 User Manual

15

J4

J1

J2

J3

J1

RED to Hopper Speed
Control Board (+)

BLK to Hopper Speed
Control Board (-)

P1639

FIG. 3 AUGER MOTOR TERMINALS

FIG. 4  AUGER DRIVE COMPONENTS

Location

The auger components are located inside

the bottom part of the hopper except for the auger
drive bracket, washer and locknut, which are located
on the outside bottom rear of the hopper. The auger
motors are located on the rear of the auger motor
mounting panel. Refer to Fig. 5 for disassembly and
assembly.

Test Procedures - Auger motors
1. Disconnect the dispenser from the power source.
2. Disconnect the wires from the motor to be tested.
3. Check the voltage across the positive (white/or-

ange) wire for the right motor, or the positive
(white/red) wire for the left motor and the negative
(green) wire with a voltmeter. With the rinse/run
switch in the run (lower) position press and hold
the appropriate dispense switch. Connect the dis-
penser to the power supply.  After a .6 second
delay the indication must be 4.0 to 24.5 volts dc.

P1666

Auger Drive  Motor (Refer to Fig. 2)
1. Remove hopper assy (17), and set aside for reas-

sembly.

2. Remove the four #8-32 screws securing the hop-

per support plate (12), remove plate and set aside
for reassembly.

3. Remove the four #8-32 screws, located inside the

dispenser housing on the lower right front of the
auger motor mounting panel (21), securing auger
motor mounting bracket (18) and auger motor
(19) to the rear of the auger motor mounting panel
(21).

4. Disconnect the wires from the hopper drive board.
5. Remove auger motor mounting bracket (18), au-

ger motor (19) and dust seal (20) as an assembly.

6. Remove dust seal (20) from auger motor (19).
7. Disconnect the wires from the auger motor (19).
8. Remove the four #8-32 screws securing the  auger

motor (19) to the auger motor mounting bracket
(18).

9. Remove auger motor (19) and discard.
10. Using four #8-32 screws install new auger motor

(19) on mounting bracket (18).

11. Install dust seal (20) on auger motor shaft and

align notch in seal with motor casting.

12. Reconnect the wires to the terminals on the hop-

per drive board.

13. Refer to Fig. 3 when reconnecting wires.
14. Using four #8-32 locking screws install auger

motor, dust seal and mounting bracket to the rear
of the auger motor mounting panel (21).

15.  Install hopper assy (17).

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